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S77857 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The PIN,SHOULDER,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 416 OVERALL, shank_length: 0.460 INCHES NOMINAL IN, overall_length: 0.900 INCHES NOMINAL IN, shank_diameter: 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN, surface_finish: 125.000 MICROINCHES OVERALL, first_end_style: RADIUS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-565-0199, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
S77857
NSN: 5315-00-565-0199
FSC: 5315
CAGE: 92824 — MAG AEROSPACE INDUSTRIES INC.,DBA MONOGRAMSYSTEMS DBA MONOGRAM SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 416 OVERALL
shank_length0.460 INCHES NOMINAL IN
overall_length0.900 INCHES NOMINAL IN
shank_diameter0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
surface_finish125.000 MICROINCHES OVERALL
first_end_styleRADIUS
second_end_styleSQUARE
style_designatorSHOULDER
shoulder_diameter0.312 INCHES NOMINAL IN
first_end_locationSHANK END
first_hole_diameter0.136 INCHES NOMINAL IN
hole_arrangement_styleONE END DRILLED
NSN5315-00-565-0199
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: S77857 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FIRST HOLE DIAMETER: 0.136 INCHES NOMINAL IN
•
SHANK DIAMETER: 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 416 OVERALL
•
SURFACE FINISH: 125.000 MICROINCHES OVERALL
•
STYLE DESIGNATOR: SHOULDER
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
SHANK LENGTH: 0.460 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
FIRST HOLE DIAMETER0.136 INCHES NOMINAL IN
SHANK DIAMETER0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
MATERIALSTEEL COMP 416 OVERALL
SURFACE FINISH125.000 MICROINCHES OVERALL
STYLE DESIGNATORSHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SHANK LENGTH0.460 INCHES NOMINAL IN
OVERALL LENGTH0.900 INCHES NOMINAL IN
HOLE ARRANGEMENT STYLEONE END DRILLED
SECOND END STYLESQUARE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
1900787Interchangeable
interchangeable cross-reference
interchangeable
1903087Interchangeable
interchangeable cross-reference
interchangeable
77857Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S77857?
S77857 is a PIN,SHOULDER,HEADLESS.
What parts can replace S77857?
There are 3 known substitutes for S77857: 1900787, 1903087, 77857. Substitute compatibility should be verified for your specific system.
Is S77857 still available?
S77857 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026